Hollow auger



(ModeL) J. A. RODMAN.

HOLLOW AUGER. No. 286,964. Patented Oct. 16, 1883.

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UNITED STATES PATENT @Fricri. I

JAMES A. RODMAN, OF LEBANON, TEXAS.

HOLLOW AUGER.-

SPECIFICATION forming part of Letters Patent No. 283,981, dated October16, 1883,

Application filed February. 9. 1883. (ModeL) To aZZ whom, it mayconcern:

Be it known that I, JAMES A. RODMAN, of Lebanon, in the county of Collinand State of Texas, have invented a new and Improved Hollow Auger, ofwhich the following is afull, clear, and exact description;

In the work of forming tenons on the ends of wheel-spokes, and insimilar work-such, for instance, as fitting ferrules on single-trees,Ste-the spoke or other article is first pointed down with a knife orfore-auger, as the hollow augers will not take hold .upon the blunt endof the spoke. This requires extra time and labor, which it is the objectof my invention to avoid.

My invention consists in an adjustable hollow auger and an adjustablefore-auger, which are combined together for use with an ordinarybrace,land constructed in such a manner that when applied to use the endof the spoke or other article is first beveled by the foreauger, and thetenon then formed by the hollow auger. The cutters of the fore-auger areformed upon pivoted arms, which are automatically released, and thenthrown open by a spring when the spoke is pointed, in order to giveopportunity for the hollow auger to act, all as hereinafter describedand claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a perspective View of my improved auger. Fig. 2 is alongitudinal section of the same. Fig. 3 is a bottom view of the hollowauger, and Fig. 4 is asection at right angles to Fig. 2-.

A is the head or yoke,inade in one piece, of inverted U form, andprovided with a shank, a, for being clamped in place. At the lower andopen end of the head A are the jaws b c, forming the hollow auger I),being what is termed the off jaw, and c the jaw carrying the knife orcutter (Z. The two jaws b c are attached at one end by a pivot-pin orscrew, 6, solpthat they may be separated more or less, according to thesize of tenon that is to be cut. Their outer or moving ends are attachedto the opposite leg of the head A by a clampingscrew, f, which passesthrough a slot in the leg, so that the jaws may be clamped firmly, and,as shown in Fig. 3, a graduated scale is provided for guiding theadjustment. 9 g are two arms having forked ends that are pivoted at h tothe head A, and are formed at their lower end with the flaring jaws z iof the foreauger, one of which is fitted with a cutter, 7c. The jaws i2' come beneath the jaws of the hollow auger when the arms r g arebrought together, and in this position they are held by latches ortriggers Z Z, the ends of which catch upon the jaws b c. A spring, m,connected to the upper end of the arms 9, serves to spread the arms openwhen they are released. \Vithin the head A, and attached to one sidethere of by a screw passing through a slot, 0, in the side of the head,is a gage or stop, 92, which, being adjustable in the slot 0, regulatesthe depth to which the spoke enters the tool, and consequently thelength of the tenon.

In using the tool the jaws b c are adjusted according to the diameter ofthe tenon that is to be cut, the stop a is adjusted, and the arms 9 thenbrought together and the triggers Z caught. The tool is then applied tothe end of the spoke, and the fore-auger acts first to bevel or pointthe end. As soon as the pointed end reaches the triggers Z they areraised, and the arms 9 being thereby released, they spring outward,leaving the hollow auger free to act upon the spoke, and the continuedrevolution of the auger causes the cutting of the tenon until the spokereaches the stop a.

Vith this tool the work of forming round tenons can be performed at agreat saving of time and labor.

It will be understood that I do not confine myself to the exact form anddetails of the parts as shown, as the same may be varied within thescope of my invention.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a tenoning-tool, the combination of a hollowauger and a'beveling or tapering auger, the latter having means capableof engagement with and disengagement from the former, whereby the spokeis successively pointed or beveled and tenoned, substantially asdescribed. g

2. In a tenoning-tool, the combination of the hollow auger and thebeveling or tapering auger, the latter arranged below the hollow auger,and having means capable of engagement with and disengagement from saidhollow au- ICO ger, substantially as and for the purpose set i'orth. V

3. I11 a tenoning-tool, the combination,with the hollow anger, of thebeveling or tapering auger having pivoted arms provided with beveledjaws, one of the latter having a cutter, and arranged below the hollowauger, said arms having means to effect the holding of the same, and topermit their release after the beveling or tapering of the spoke ormaterial,

substantially such as set forth.

4. The combination, with the head A, having the cutting-jaws Z) c, ofthe arms a, pivoted to said head, and carrying beveled jaws i,one ofwhich is provided with a clutch, 7.", and

JAMES A. RODMAN.

Vitnesses:

B. S. SI-IELBURNE, J. D. CARPENTER, \V. M. SAND.

